01, LDPE, low density polyethylene, high pressure polyethylene, high pressure film
The packaging bag made of this material is a little better, the texture of this bag is very good on the hand, and it will feel particularly soft, the flexibility of the packaging bag itself is also very good, especially transparent. If the material itself is thicker, the packaging bag will be harder and the expansion rate will be larger. Of course, packaging bags made of this material are actually not particularly expensive, and they are also very cheap.
02, opp, oriented polypropylene
The packaging bag made of this material should be more transparent and brittle, but the disadvantage is that the overall tension is not particularly sufficient. In addition, packaging bags made of this material are easier to decolor, and it is more difficult to print.
03, CPP, cast polypropylene, unstretched polypropylene
The transparency of this material is also very high, if compared with PE film, the hardness is slightly higher, and the clarity is also higher. The packaging bags made of this material are actually higher-end than the above.
04, PET, polyethylene terephthalate
The transparent bag made of this material has the advantage of transparency, which is also very good, and the overall strength and toughness of the packaging bag are also very good, and the packaging bag is not easy to break. This material is also a relatively common composite material.
05, PA, nylon
In fact, this kind of material is not particularly easy to talk about, because this kind of material itself is also very common on the market, it is a relatively good composite material, it is particularly flexible, and it is particularly soft to the hand.
06, aluminum foil, AL
Aluminum foil is actually a very thin aluminum sheet. To put it bluntly, it is a kind of thin sheet formed after many times of rolling. The material itself is actually a very good heat conductor, and it is also a very good light-shielding body. The characteristic of this material is that it is relatively light in weight, and has a certain metallic luster, which is particularly good-looking, and its shading performance is very good. Secondly, when this material is not easy to be reversed, the moisture resistance and waterproof performance are particularly good, so the packaging bags made of this material are very high-end and the price is very high.